How often can my landlord raise the rent?

Once per year — that's the maximum. Your landlord cannot increase your rent more than once every 12 months under the Renters' Rights Act 2025.

On top of that, they cannot raise the rent at all during the first 12 months of a new tenancy. So if you moved in recently, you have at least a year before any increase is even possible.

Each increase must go through the formal Section 13 process: your landlord sends you Form 4A with at least two months' notice. The new rent can only take effect at the start of a new monthly rent period after that notice expires.

Any rent review clauses in older contracts that allowed more frequent increases are no longer enforceable after 1 May 2026. Even if your old tenancy agreement says the rent can go up every six months, that clause is now void.

If your landlord tries to increase your rent twice in 12 months, refuses to use Form 4A, or gives you less than two months' notice, you can refuse to pay the higher amount. The proposed increase simply doesn't apply. Contact Citizens Advice (citizensadvice.org.uk) if your landlord is pushing back.